Deletes taking to long, just take a break 🙂
(so replication can catch up/things get unblocked)
Only use save sql, there is no escapeing.
class ActiveRecord::Base
def self.slow_delete_all(condition)
count = 0
loop do
result = ActiveRecord::Base.connection.send(:delete_sql, "delete from #{table_name} where #{condition} limit 10000")
count += result
break if result == 0
sleep 1
end
count
end
end
If your has_and_belongs_to_many associations suddenly need to know more, its time to convert them to a real model.
Code
class CreateJoinModel < ActiveRecord::Migration
def change
rename_table :products_users, :purchases
add_column :purchases, :id, :primary_key
[:created_at, :updated_at].each do |column|
add_column :purchases, column, :timestamp, null: false, default: Time.at(0)
change_column_default :purchases, column, nil
end
end
end
require 'resque/tasks'
require 'resque_scheduler/tasks'
# Scheduler needs very little cpu, just start it with a worker.
desc "schedule and work, so we only need 1 dyno"
task :schedule_and_work do
if Process.fork
sh "rake environment resque:work"
else
sh "rake resque:scheduler"
Process.wait
end
end
Make your rspec output look more interesting!
(yes we had too much spare time at our hands… 😀 )
# spec/spec_helper.rb
# encoding: UTF-8
if defined? RSpec::Core::Formatters::ProgressFormatter
RSpec::Core::Formatters::ProgressFormatter.class_eval do
DOTS = ['☘','⚘']
def example_passed(example)
output.print green(DOTS[rand(DOTS.size)])
end
end
end
Michael Grosser, the Blog 